Acide désoxyribonucléique. Structure de la double hélice d'ADN.
Pour les articles homonymes, voir DNA. Propriétés générales[modifier | modifier le code] DNA Molecule: Replicating the Helix. Transcription & Translation: mRNA Splicing. Transcription & Translation: Translation (Basic) Transcription & Translation: Translation (Basic) The yellow molecule is messanger RNA (mRNA); it leaves the nucleus; at the ribosome, ribosomal RNA (rRNA) binds to mRNA; transfer RNA or tRNA (in green) can read the three letter code on mRNA or codon; each codon codes for one animo acid (red molecule attached to tRNA); the sequence of codons on the mRNA determines the sequence of amino acids in the protein, which in turn determines the structure and function of the protein.
Duration: 2 minutes, 4 seconds Transcript: When the RNA copy is complete, it snakes out into the outer part of the cell. Then in a dazzling display of choreography, all the components of a molecular machine lock together around the RNA to form a miniature factory called a ribosome. It translates the genetic information in the RNA into a string of amino acids that will become a protein.